ee.Filter.date

按日期范围过滤集合。开始和结束可以是日期、数字

（解释为自 1970-01-01T00:00:00Z 以来的毫秒数）或字符串（例如“1996-01-01T08:00”）。基于“system:time_start”属性。

返回构建的过滤条件。

用法返回
ee.Filter.date(start, end)过滤
参数类型详细信息
start日期|数字|字符串开始日期（含）。
endDate|Number|String，可选结束日期（不含）。可选。如果未指定，则会创建一个从“start”开始的 1 毫秒范围。

示例

代码编辑器 (JavaScript)

// collection.filterDate is preferred.
// Constructed FeatureCollection representing a field site sampled at
// four different dates.
var geom = ee.Geometry.Point([-119.56, 37.67]);
var fc = ee.FeatureCollection([
  ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),
  ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),
  ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),
  ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})
]);

// Filter the observations in July 2021.
print('Field site observations collection in July 2021',
      fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')));

// Alternative input formats.
var dateRange = ee.DateRange('2021-07-01', '2021-08-01');
print('ee.DateRange as an input',
      fc.filter(ee.Filter.date(dateRange)));

print('Numbers (milliseconds since Unix epoch) as an input',
      fc.filter(ee.Filter.date(1625875200000, 1626739200001)));

print('ee.Date objects as an input',
      fc.filter(ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))));

Python 设置

如需了解 Python API 和如何使用 geemap 进行交互式开发，请参阅 Python 环境页面。

import ee
import geemap.core as geemap

Colab (Python)

from pprint import pprint

# collection.filterDate is preferred.
# Constructed FeatureCollection representing a field site sampled at
# four different dates.
geom = ee.Geometry.Point([-119.56, 37.67])
fc = ee.FeatureCollection([
    ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-06-10')}),
    ee.Feature(geom, {'prop': 11, 'system:time_start': ee.Date('2021-06-20')}),
    ee.Feature(geom, {'prop': 19, 'system:time_start': ee.Date('2021-07-10')}),
    ee.Feature(geom, {'prop': 10, 'system:time_start': ee.Date('2021-07-20')})
])

# Filter the observations in July 2021.
print('Field site observations collection in July 2021:')
pprint(fc.filter(ee.Filter.date('2021-07-01', '2021-08-01')).getInfo())

# Alternative input formats.
date_range = ee.DateRange('2021-07-01', '2021-08-01')
pprint(fc.filter(ee.Filter.date(date_range)).getInfo())

print('Numbers (milliseconds since Unix epoch) as an input:')
pprint(fc.filter(ee.Filter.date(1625875200000, 1626739200001)).getInfo())

print('ee.Date objects as an input:')
pprint(
    fc.filter(
        ee.Filter.date(ee.Date('2021-07-01'), ee.Date('2021-08-01'))
    ).getInfo()
)